<template>
  <div class="jc-component__range">
    <div class="jc-range" :class="rangeStatus?'success':''">
      <i @mousedown="rangeMove" :class="rangeStatus?successIcon:startIcon" ref="huakuai"></i>
      {{rangeStatus?successText:startText}}
    </div>
  </div>
</template>
<script>
    export default {
        props: {
            // 成功之后的函数
            successFun: {
                type: Function
            },
            //成功图标
            successIcon: {
                type: String,
                default: "el-icon-success"
            },
            //成功文字
            successText: {
                type: String,
                default: "验证成功"
            },
            //开始的图标
            startIcon: {
                type: String,
                default: "el-icon-d-arrow-right"
            },
            //开始的文字
            startText: {
                type: String,
                default: "拖动滑块到最右边"
            },
            //失败之后的函数
            errorFun: {
                type: Function
            },
            //或者用值来进行监听
            status: {
                type: Boolean
            }
        },
        name: "JcRange",
        data() {
            return {
                rangeStatus: false,
            };
        },
        methods: {
            rangeMove(e){
                let ele = e.target;
                let startX = e.clientX;
                let eleWidth = ele.offsetWidth;
                let parentWidth =  ele.parentElement.offsetWidth;
                let MaxX = parentWidth - eleWidth;
                if(this.rangeStatus){//不运行
                    return false;
                }
                document.onmousemove = (e) => {
                    let endX = e.clientX;
                    this.disX = endX - startX;
                    if(this.disX<=0){
                        this.disX = 0;
                    }
                    if(this.disX>=MaxX-eleWidth){//减去滑块的宽度,体验效果更好
                        this.disX = MaxX;
                    }
                    ele.style.transition = '.1s all';
                    ele.style.transform = 'translateX('+this.disX+'px)';
                    e.preventDefault();
                }
                document.onmouseup = ()=> {
                    if(this.disX !== MaxX){
                        ele.style.transition = '.5s all';
                        ele.style.transform = 'translateX(0)';
                        //执行成功的函数
                        this.errorFun && this.errorFun();
                    }else{
                        this.rangeStatus = true;
                        if(this.status){
                            this.$parent[this.status] = true;
                        }
                        //执行成功的函数
                        this.successFun && this.successFun();
                    }
                    document.onmousemove = null;
                    document.onmouseup = null;
                }
            },
            reset(){
                this.rangeStatus = false;
                this.$refs.huakuai.style.transition = '0.5s all';
                this.$refs.huakuai.style.transform = 'translateX('+0+'px)';
            }
        }
    };
</script>
<style scoped>
  .jc-range{
    background-color: #c0ccda;
    position: relative;
    transition: 1s all;
    user-select: none;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 45px; /*no*/
  }
  .jc-range i{
    position: absolute;
    left: 0;
    width: 60px;/*no*/
    height: 100%;
    color: #919191;
    background-color: #fff;
    border: 1px solid #eee;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .jc-range.success{
    background-color: #bcd35f;
    color: #fff;
  }
  .jc-range.success i{
    color: #bcd35f;
  }
</style>
